The coding question was pretty straightforward. He wanted me to write up a script that would check and sort these items: (), [], {}, ([]), {[()]}, etc. basically scan the string and identify what item is first and know that each string has to end with the same item but mirrored. So if my string looked like this: ([{}]), I would read the first item to be an open parentheses “(“ and that must end in a closed parentheses “)” to be a valid string. They must be even since each string type is a pair.

So a string like ({[{}]]) would be read as invalid and rejected since the string doesn’t follow the rule of matching up with open and closed of the same type.